Acme BH203 Wireless Headphones - Bluetooth 4.2 These over-ear wireless headphones from Acme are the ideal solution for keeping you relaxed while traveling, because they allow you to be in your own world of music for up to 11 hours continuously on only one charge. Listen to music directly from your smartphone or tablet thanks to Bluetooth 4.2 connectivity. Having a battery ‘die’ before the end of a journey need no longer be a concern - simply plug in the included 3.5mm audio cable and go back to your world of music.